Steam-boiler indicator and recorder.



C.-V. WALKER. STEAM BOILER INDICATOR AND RECORDER.

APPLICATION FILED FEB. 15.1917- Patented Sept. 17,1918,

9.- 3 cmmzs WWII/(ER.

T Av an}; 1211;. COPY Application filed February 15, 1917. i

To all whom it 722 (11 concern:

lle-iti known that I, CHARLES V. Yunnan. a citizen of the United States,residing at Long Beach, in the county of Los Angeles and State ofalifornia, have invented new and useful In'iprove'ments in Steam-BoilerIndicators and Recorders, of which the following is a specification.

My object is to prm'idemeans which will indicate andrecordchronologically the sudden flllt't'lltltiOlIS caused by openingthe test cock in the lower leg of a steam water gage, and myi'm'entionconsists in the novel featurcs herein shown, described andclaimed.

In maintaining steam boilers in" continuous operation and safe workingcondition-it has been 'found that the operation of the boil ers cannotbe intrusted to unreliable attendants who may not comply with the boilerin spectors rules as to testing the pipes, blowing ofi the gage valves,and otherwise maintamim the boiler in a "properly filled and heatedcondition. It is the principal object of this invention to provide arecording thermometer which will be so connected with the boiler andgageas to indicate by the sudden fluctuations in the temperature recordingsthe manner in which the boiler has been cared for duri ng the absence ofthe superin-' tcndent. A series of observation ports 11 are formed alo'ig the side of the water gage and are covered with glass, so that thelevel of the water therein 1na be seen.

Figures 1 and 2 are views in elevation showing a water gage, the head ofa boiler, the upper and lower legs connecting the gage. to the head ofthe boiler, and an indicating thermometer connected to the lower leg.*lfigTB is an enlarged sectional detail of the fitting incorporated intothe lower leg of the connection, and showing the thermometer insertedinto position for use.

' Reterrin more articularly to the drawings, 10 inc icates a structionand which is here shown as provided with a water gage 11. This-gageextends vertically and is connected to the boiler by meansof an upperconnecting pipe or leg 12 and-a lower connection or leg 13. In thepresent case the lower connection is supplemented by an interposedcoupling pipe 14 which serves as a mounting for the recordingthermometer. The lower end of the Specification of Letters Patent.

oiler of any desired con- TEs 1 PATENT iS TEA-M-BOI -TJER J INDICATORAND RECORDER.

Patented Sept. 17, Serial no. 148,921. r

water gage is supplied with. a blow-olt' test cock 15 controlled by ahand wheel 1b. as is common. These parts are of standard const ruct-ionand may bear-ranged as desired.

Reference being had to Fig.3 it will be seen that the coupling pipe llis formed with bolting flanges at its opposite ends bywhich it issecured in place and that it further has a threaded boss 17 extendingthrough one of its walls. This boss is provided to receive a threadedplug 18 which is screwed in place by its hexagon head 19. Mounted withinthe plug is a thermometer bulb 20 which extends into the passage throirh the pipe and is thus in a position to record the temperature therein.The bulb 20 is in COIIHHUHlQHtlOU with an operating tube 21 whichextends outwardly through a suitable sleeve upon the plug 18 and led toa recording device 22. 'ithin this recorder the wire. actuates a stylusarm 23 which is adapted to travel over the face of a recording dial andto graphically indicate the sudden changes in the temperatures withinthe' pipe coupling lat.

In operation the apparatus will be used as follows:

\Vhen positioned with its bulb extending into the passage-way throughthe 1)l])e'14: it will record the temperature and the fluctuations intemperature of the water passing along the pipe and standing in thewater gage. It will be umlcrstoodthat this tern perature will beconsiderably lower than the temperature within the boiler. However, therecorded indications will properly register the conditions desired to beascertained. As long as the water stands at a proper height within the.water gage, the recorder will indicate a tennwrature corresponding tothis desirable condition. \Vhen the water becomes. low \vithin theboiler. steam .wil pass around the thermometer bulb 20 and the recorderwill indicate a corresponding rise in temperature. It will be furthernoted that when the gage valves are blown off the excessively heatedboiler water will. pass through the pipe 14 and cause a variation in therea ding upon the recorder and that these various condition. as well asthe fluctuation of the recorded temperatures will indicate exactly whatcare the boiler has had during the absence of the inspector.

It will thus be seen that the apparatus here disclosed is simple in itsoperation and that it acts as a'nf effective and ositive check upoI'Ltheperformance of a oiler and the careigiven it by the workmen in charge oflts'jma-intenanee.

While I have shown the preferred con struction of my indicating andrecording), :11)-

paratus as now known to me, it will be understood that various changesin the construction, combination and arrangement of parts may be made bythose skilled in the art without departing from the spirit of myinvention. I 4 I nected tothe lower leg to record the sqddencname tothis specification. i

I claim: I v p A steam boiler'indioator and recorder com 15, prising thecombinationwith it (steam boiler Y and a water gage haiving upper endlower legs in connection with the boiler and having atest coek'extending from'the lower leg, of a] chronologically recordingthermometer con-L 29 fluctuations in temperature causedby openin% thetestvcoek. 1 r q o '11 testimony whereof I have signed my WALKER.

CHARLES V.

